1.
Bogotá; ISS; ene. 1997. 90 p. tab.
Monography
in Spanish
| LILACS
| ID: lil-377260
2.
Bogotá; Colombia. Instituto de Seguro Social; 1992. 126 p. ilus.
Monography
in Spanish
| LILACS
| ID: lil-370257
3.
Bogotá; Organización Panamericana de la Salud; 1989. [350] p.
Monography
in Spanish
| LILACS
| ID: lil-367627